i had same experience with you 6 years ago. (i was 28 at that time, no children). I chose to leave 'cos i was so unhappy and cried all the time. i know he had another woman but he said our characters didn't match. i know we had problems but he didn't leave that woman.
now I'm remarried for 3 years and wait for bingo. i'm now very happy and present c6 treats me well.